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Ethyl alcohol has a boiling point of 78.0°C, a freezing point of -114°C, a heat of vaporization of 879 kJ/kg, a heat of fusion of 109 kJ/kg, and specific heat of 2.43 kJ/(kg · K). How much energy must be removed from 0.584 kg of ethyl alcohol that is initially a gas at 78.0°C so that it becomes...

Here's the question: The transverse wave shown is traveling from left to right in a medium. The direction of the instantaneous velocity of the medium at point P is: A. no direction since v = 0 B. to the right C. upwards D. at an angle upwards and to the right E. downwards...

My school offers abstract algebra. The prereq is intro to proofs and I can't fit that in my schedule for next semester... don't want to take too many credits. I'll keep this in mind when I make my future schedules.

I had the same problem when I took my first physics class back in 11th grade. What I did was to do the hardest problems from the textbook and made good use of all the online resources available. After a quarter of spending a ridiculous amount of work studying physics (for me it was like 2+ hours...

Thanks for the info. I was leaning towards calc 3 because I'd rather not learn a bunch of math while taking the chem classes. I'm also ahead of schedule so there's no need for me to hurry and take those chem classes. What's group theory? There's no course with that name offered at my school...

I'm a molecular bio major. Thermo and quantum chem are the most math intense classes I need to take. Several people told me that it's good for any science major to take calc 3, matrices, and diffy Q. I don't mind math, but I want to make sure I can handle the math in the hard chem classes.

A quick look in the textbook and I see what you mean. Thanks.

Are you saying that I should show that sin n is bounded and therefore goes to 0?

For the first one I know that 1/√n diverges. If there's a ln n on the top it'll make the series slower. If I try the alternating series test, I get 0 when I take the limit, but I can't figure out how to show that the function is decreasing. I tried to take the derivative but it doesn't tell...

I have a test on this stuff and I'm confused about some things. First, how do I show work to this problem? I know that its absolute value diverge but I don't know how to show the work. Also not sure how to show the work for alternating series test. Not sure how to show that the it's...

I'm picking classes for next semester and I'm deciding between calc 3, thermo, and quantum chem. Calc 3 is not required for my major, but the other 2 are. My school only requires calc 2 to take the chem classes, but I've heard that it's helpful to take more math classes before I take them...